Free retirement calculator. Plan your retirement savings. See how much you need to save monthly to retire comfortably. Accounts for inflation and investment returns. Enter your current age, target retirement age, existing savings, and monthly contribution to see your projected retirement savings. Uses the 4% rule to estimate sustainable monthly income from your portfolio. Get a clear picture of any savings gap and exactly how much more you need to save each month to meet your goals. The growth chart shows your savings trajectory over time. All calculations are adjusted for inflation to give you real purchasing-power numbers. Everything runs in your browser — no data is sent anywhere. No signup required.